The new Norton Fine Grinding Sponge is the ideal range of paint finishes, especially after the fine grinding process. The innovative “open mesh” sponge surface design absorbs moisture and perfectly conforms to the surface shape; it maintains stable cutting force, surface uniformity, and effectively reduces scratch depth during product use, giving the paint a more Perfect surface quality. In order to improve the efficiency of over-fine, it is recommended to use a two-way sander, but this product is also used for manual grinding.